On second thoughts I did offer a solution: leave jumper cables as they are.
NT
On second thoughts I did offer a solution: leave jumper cables as they are.
NT
On Thu, 19 Apr 2018 13:43:44 -0700 (PDT), snipped-for-privacy@gmail.com wrote: (...)
Jumper cables with automatic safety switching
Jumper cables for sparkling polarity indicator
Battery jumper cable
Car battery jumper cable (this one is rather complicated)
Polarity independent battery jumper cables or charger with automatic polarity detector and built-in automatic safety features
Jump start and reverse battery protection circuit
Polarity independent battery jumper cables or charger with automatic polarity detector and built-in automatic safety features
Never blow up your battery with Michelin Smart Jumper Cables
and so on.
-- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com
In their suspenders and brar?
I was at the Folsom Street Fair. A gigantic scary-looking hairy bear-guy, dressed in leather straps, accidentally bumped into me. He said, in a tiny squeaky voice, "Oh! Excuuuuse me!"
-- John Larkin Highland Technology, Inc lunatic fringe electronics
I tap the final connection to see how big a spark it makes.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
I think they call them fuzzy bears or something like that in San Fran.
Boom: Car battery explosions and fires
What happens when you Jump Start your car the WRONG WAY! Spoiler: Carry spare fuses for the car.
-- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com
Something like this
I'm sure grateful that's Only in Milwaukee.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement
Lemme guess, you want to get into the business with product #2?
Manipulating Usenet egomaniacs into doing your homework for you isn't exactly a challenge but I doubt anyone is gonna fall for a hustle THIS transparent.
I could be wrong, though.
Say, incidentally how do I go about ah, "jump starting" a car where the security system has ah, malfunctioned and killed power to the starter?
Y'know, for science.
Jeff Liebermann wrote in news: snipped-for-privacy@4ax.com:
snip
Start with two of these and make an LED indicator board with some diode bridges in it to tell you when you have it right.
Or you could take a std set of cables and add have a lab alligator clip jumper to each of the four ends. Then put a small polarity indicator circuit in series with them and use them to 'test' your connection choices.
The automatic way would be to use high current relays which get fired by the circuit that FED the LEDs. Set it (attach the cables) and go!
once you work it out, i once had a history piece that was started that way all the time
NT
Thank you for looking those up, lots of interesting circuits. The one produ ct I saw on the shelf claimed protection under
witches the correct polarity regardless of battery terminal attachment of c lamps. Must recover from/ survive full short circuit overload on heavy duty batteries. Circuit requires no intervention from user other than clamp att achment.
complicated in my estimation.
You're not even close. Go back to fiddling with your 80's vintage audio dum pster finds...
switches the correct polarity regardless of battery terminal attachment of clamps. Must recover from/ survive full short circuit overload on heavy du ty batteries. Circuit requires no intervention from user other than clamp a ttachment.
y complicated in my estimation.
umpster finds...
what other possible use is this technology?
It's an unfair characterization of my work! I have a number of dumpster finds from the 1990s, too!
The wonders of a bridge rectifier to ensure polarity correctness for Dummies.
Jamie
ote:
ally switches the correct polarity regardless of battery terminal attachmen t of clamps. Must recover from/ survive full short circuit overload on heav y duty batteries. Circuit requires no intervention from user other than cla mp attachment.
verly complicated in my estimation.
't
HIS
io dumpster finds...
Doesn't work.
Just a diode for reverse-polarity protection works fine. If you get it wrong grab another set of cables with the same protection diode and attach to a second car and try again. If you get that wrong too try again, just keep rolling cars up until you get it right. Doesn't require any intervention from the user other than clamp attachment (assuming the user knows how to drive.)
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